Diamond-drill-dore catch or retainer



(No Mode1,1

DIAMOND DRILL CURE CATCH OR RETAINER. 110. 314.777.- V1 a11 11511e111`11111.31,1885.

@Um/1N @M111 Inh/ENTER PER /llw wgyw ATTORNEY a F 1 B 1 x f NITED STATES; 'PATENT N rr ALBBBT BALL, or cLABnMoNnnnw HAMBsHIBB."

DIAMOND- DRiLL-cojea 'CATCH 0R REIAI Nee'.

erncrrIcArI-ON forming part oLyeterfgiPatem' No. 314,777, dated March 31 leas.

Applicaiitn filed November 1884. (No model.) i u To all whom it concern:

Be itv known that I, ALBERT BALL, of Claremont, in the county or" Sullivanand State of New Hampshire, have invented a new and useful Improvement in` Diamond-DrillCore Catches or Retainers; and I do hereby declare that the following is a full and exact description of the same, reference being hadto the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in core-receivers for use with diamond and other rotary drills for boring rock, Ste., and my object is to produce a device which will not only receive the core during the progress of drilling, but will as readily retain the same without clogging up the drilling-tube, and while it is intended to be made thin, light, and ilexible, it shall at the same time be strong and durable and cheap to manufacture.

The novelty of my invention therein consists 0i a cylinder with catches and openings, all made out of a blank punched from asingle sheet of thin steel, and then converted into a cylinder and tempered, all as more fully hereinafter described,and pointedout in the claims.

For the better comprehension and understanding of this invention, in connection with the description to follow, attention is invited to the accompanying drawings, in which- Figure l shows the blank as punched from a sheet of steel, and the one preferred as the simplest form for making my device. Fig. 2 is a plan of the top end of this blank when converted into a cylinder and otherwise made complete. Fig. 3 is a vertical central section of the same. Fig. 4 is a view in plan ofa mod-V ilied form of the blank. Fig. 5 isa vertical central section of this form when converted into a cylinder and made complete. Fig. 6 is a plan of the upper end of the same, and Fig. 7 is a vertical central section through a drilling-tube and my core-retainer of the modified forni.

Like letters of lreference indicate corresponding parts throughout the several views.

The blank G (shown in Fig. l) is punched from a thin sheet of steel, and has on one edge in the direction of its length a series of parallel fingers, F and H, and on the opposite edge, c, which is the base proper, it has a series of open spaces, a a a, which, when the device is completed and placed in position within'the After the 'blank has been punched into the form above described, it is then converted into a cylinder by bringing its two ends together. Afterthis has been done, the lingers F are then bent inward to form spring-catches, and

the whole is then tempered to a sufficient and reasonable degree of hardness. rFhe catches F, however, should have suflicient elasticity and spring to yield to the pressure of the core when entering the cylinder G, andA to hold and prevent it from dropping back when the drill ceases operation. The body of the device is preferably made short, so as to lessen the liability of being caught by the grit, and its diameter should be sufficient to allow the core to enter it without obstruction.

In the modification, Fig. 4, which does not differ materially from Fig. l, the blank G has its fingers formed by punching out its central portion, as shown, leaving both longitudinal edges solid, as shown at H, with the exception of open spaces a a a on the bottom., and, if desired, this form may also have similar spaces, a: x x, on the upper edge, as shown by dotted lines in this gure. This modified form is completed in t-he same manner as described with reference to the form shown in Fig. l, and is similar in all other respects except as regards the fingers F.

In Fig. 7 is shown a section of tubing or a coupling, A, with an annular drill-head, B, screwed into its lower end, and a section of tubing or pipe, C, screwed into its upper end, establishing shoulders d and e, respectively. Between these shoulders is held a core receiver and retainer, G, of the forni illustrated in Fig. 5, the base c resting upon the lower shoulder, d, and the fingers or portions H H constituting guides, and bearing against the length of tubing or pipe next above the tube or coupling A.

It will be manifest that my device could be lengthened, if desired, so as to have two or more of the spring-catches in line one above the other, and that it can be attached to and form a part of a long inner core-barrel made in a similar or other manner. In fact, this IOO device is capable of many modifications withdispensing with grooves and other means for this purpose. Moreover, strength and durability are features of this device, and 'there are no rivets or small removable.pa rts,-which,

make it of special value in connection with vthe use of diamond-drills, inasmuch as a piece of metal in the hole frequently destroys man carbons and causes much damage. v f' What-I claim, and desire to secure by Let-1 ters Baten-t, isf- 1;.- Iii; combination with an annular` diamond-drill head, a cylindrical steel core re'- ceiver ,and retainer, v with upwardly-extending spring-catches and a series of base-openings, substantially as described.

2. As a new article of manufacture, a cylindrical core receiver and retainer composed lwholly of a, blank with upwardly-extending catches and a series of base-openings, all

punched from a single sheet of steel rolled v and tempered, substantially as described.

tai'ner G, having upwardly-extending spring- ;catches F, intermediate its top and base, and

a series of openings for the passage of the water, &c., substantially as described.

3. The cylindrical core receiver and ren In testimony whereof I affix my signature in 3 5 presence of two witnesses.

ALBERT BALL.

Witnesses:

'J. DUNCANUPHAM,

CHAs. B. RICE. 

